Giant Crystal Cave Description

The Incredible Giant Crystal Cave serves as home to the largest crystals on earth – some as large as 34 ft (11 m) long and weighing 55 tons. They are composed of selenite that a nearby magma chamber deposited over the centuries.

These enormous and impressive crystals formed as a result of heated groundwater being saturated with sulfide ions. Much colder surface water leaked down and contacted the mineral-saturated hot water.

Yet the two did not mix due to the difference in their densities. Hydrated sulfates formed at an extremely slow rate over the course of at least 500,000 years, forming the enormous crystals